I'm preparing for a QG18DE timing chain overhaul and would like to inquire about the exhaust VVT sprocket removal procedure in advance.
Factory manuals describe a vvt sprocket locking procedure (using air pressure) for the shallower but wider 50.65 mm vvt so that the part does not break. But my engine has the narrower/longer 75 mm "deep" version and I have never seen an illustrated manual for that one. Does it need a similar operation before removal? If so, is the procedure the same? Is there even a locking pin hole in the 75 mm hub for an allen wrench or a similar pin?
Factory manuals describe a vvt sprocket locking procedure (using air pressure) for the shallower but wider 50.65 mm vvt so that the part does not break. But my engine has the narrower/longer 75 mm "deep" version and I have never seen an illustrated manual for that one. Does it need a similar operation before removal? If so, is the procedure the same? Is there even a locking pin hole in the 75 mm hub for an allen wrench or a similar pin?